Gearing.



No. 631,208. Patented Aug. l5, |899. D. C. FRAZEUR.

GEARING.

[Application led Jan. 24, 1898.) (N o M o d el.)

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UNITED STATES PATENT EEICE.

DAVID C. FRAZEUR, 0F NEW MARKET, NEW JERSEY.

GEARING.

SPECIFICATION forming part of Letters Patent No. 631,208, dated August15, 1899.

Application filed January 24, 1898. Serial No. 667,694. (No model.)

To all whoml it may concern:

Be it known that I, DAVID C. FRAZEUR, of New Market, in the county ofMiddlesex and State of New Jersey, have invented certain new and usefulImprovements in Gearing; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same,reference being had to the accompanying drawings, which form part ofthis speci'ication.

My invention relates to improvements in gearing, and pertains to animproved gearing more especially intended for use in connection withbicycles, though it may be used in other connections to which it isadapted, alll of which will be described hereinafter and particularlyreferred to in the claims.

In the accompanying drawings, Figure lis a side elevation of myinvention, showing a` portion of a bicycle-frame to which it is ap--`plied. Fig. 2 is an enlarged longitudinal sectional view of the gearing.Fig. 8 is a detached perspective view ofthe inner end of the pitmanwhich coacts with the pinion. Fig.v 4L is a detached perspective View ofthe pinion. Fig. 5 is a detached perspective view of the U -shapedframe.

Referring now to the drawings, A indicates the saddle-post of abicycle-frame, B the front reach-bar, C the rear fork, and D thecrankhanger, all of which are of the ordinary construction, though theymay vary without affecting in any manner my invention.

E is the crank-shaft, which is journaled in any desired manner in thecrankhanger. Attached to one end of the crank-shaft'E in any suitablemanner and made fast thereon is a U-shaped frame or housing F, the outerportion G thereof being preferably detachable and provided with aninwardly-extending sleeve H, which is keyed to the shaft, its outer endbeingy connected with the inner portion of the frame through the mediumof a bolt or screw I, for a purpose to be presently described. Thesprocket .I is journaled in any suitable way upon the sleeve H of thesaid U-shaped frame, and this sprocket is provided with anoutwardly-projecting sleeve frame F and has attached to its extremity'through the medium of a key or otherwise a gear-wheel L. This gear-wheelL is thus supported and rotates with the U -shaped frame, as clearlyillustrated, and being made fast to the sprocket-wheel through themedium of its flange K causes the sprocket to rotate when the wheel isrotated, as will be readily understood. The U -shaped frame is providedwith a journal or bearing pin M, projecting, preferably, from the innerside of the frame and through its outer side, as shown. Upon this pinbetween the sides of the U-shaped frame is journaled a pin N. Alsoplaced upon this pin or journal M is a sleeve P, provided withinwardly-projecting arms Q, which extend into recesses R of the pinionN, thus locking the pinion and the sleeve together against relativerotation. The bearing or'pin M is made rigid with the U-shapedframe'and, as before explained, passes through the pinion and throughthe sleeve P and projecting outward beyond the sleeve P, to which thecrank S is keyed in the usual or any desired manner, whereby the crankand the U-shaped frame Aare made rigid, causing the U -shaped frame to Pis a pitman ct, extending rearward and carrying a hollow bar or tube o.A rod c extends within this tube Z) of the pitman a and is pivoted orswiveled to the rear part C of the bicycle-frame at the point d in anysuitable manner. rlhis rod c is made of a length not less than andpreferably greater than twice the distance from the center of thebearing or pin M (which is the axis of the sleeve P) to the center oraxis of the shaft B. In operation as the U -shaped frame is carriedaround through the medium of the crank S the pitman is held against acorresponding revolution through the medium of this rod c, which travelsback and forth in the tube b of the pitman a, as will be readilyunderstood, and,

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as will also be readily understood, through themedium of thisarrangement the pinion N is held against rotation. By this constructionthe sprocket-Wheel J is given one and a half revolutions to everyrevolution of the crank-shaft, owing to the fact that the diameter ofthe pinion N is one-half the diameter of the gear L, which is attachedto and rotates the sprocket. This relative movement, however, may bevaried at will, as Will be readily understood, by a relative increase ordecrease of the diameters of the pinion N and the gear L. For instance,instead of having the pinion IT one-halt` the diameter of the gear-WheelL the gear-Wheel L and pinion N may be made of the same diameter, and inthis case the gear-wheeL'and consequently the sprocket J, will be giventwo revolutions to every one revolution of the crankshaft.

From this description it will be seen that I am enabled to provide arelative increase in the rotation of the sprocket .I as compared to therotation of the crank S as may be desired. The construction is a simpleand yet exceedingly effective Way of increasing the relative .rotationof the sprocket and the crank-shaft.

While I have described and shown my invention as especially applicableand intended for use in connection with a bicycle, it will be readilyunderstood that it may be used in other connections to which it may beadapted Without varying or departing from the spirit or scope of myinvention.

While I here show a crank S attached to the journal or pin M, carriedand made fastto the frame F, for increasing the leverage, it will bereadily understood that a pedal or handle may be connected directly withthe sleeve P of the pitman. In this event, however, should the pinionand gear remain of the size here shown the leverage of course Would notbe as great as the attachment-of a pedal or handle to the crank S.However, in order to provide for this the diameters of the pinion andgear L may be increased and thus increase the length of the frame F, andin this event the connection of the pedal or handle directly to thesleeve P of the pitman will give the desired leverage according to thelength of the frame F, as Will be readily understood. In thisconstruction as in the other construction here shown and before fullydescribed the relative size of the pinion and gear may be varied at willfor the purpose of increasing or decreasing the relative rotation of theframe and the sprocket-wheel.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. An improved gearing comprising a sprocket or drive-Wheel having alaterallyextending sleeve, a gear made fast to said sleeve, a rotatingframe or arm concentric with the drive-Wheel or sprocket and rotatingindependentthereof, a pinion journaled upon tending sleeve projectingWithin the sleeve of y the sprocket, a drive-shaft made fast to theframe-sleeve, a gear made fast to the sprocketsleeve at a point betweenthe sides of the U-shaped frame, the inner ends or" the inner sides ofthe frame rotating loosely around the sleeve of the sprocket, a pinioncarried by and loosely journaled upon the U-shaped frame and meshingwith the gear, a pitman holding the pinion against rotation, and meansfor revolving the frame around the said gear, substantially asdescribed.

3. A gearing comprising a drive-shaft, a frame made fast to saiddrive-shaft,a sprocket loose in relation to the drive-shaft and having alaterally-projectin g sleeve, a gear rigidly connected with the saidsprocket-sleeve, a pinion loosely mounted upon and carried by saidframe, the pinion having a rigid shaft projecting through the frame, asleeve upon the pinion-shaft independent of but interlocking with thesaid pinion, a pitman connected rigidly to said sleeve and having apivotal and sliding connection at its opposite end, and an operatingmember rigidly connected with the pinion-shaft at a point outside ofsaid sleeve, substantially as described.

4c. A gearing comprising a drive-shaft, a U shaped frame having itsouter Wall provided with an inwardly-projecting sleeve rigidly connectedwith said drive-shaft and' passing through the inner Wall of saidframe,a sprocket loose upon said frame-sleeve and having anoutwardly-projecting sleeve passing through the inner Wall of theU-shaped frame, a`gear connected with the sprocket-sleeve between theWalls of the said frame, a pinion loosely journaled upon and carried bysaid frame, said pinion having a shaft passed therethrough and extendingthrough the outer Wall of the said frame, a sleeve loose upon theprojecting portion of the pinion-shaft, the abutting faces of the sleeveand the pinion having interlocking members,and an operati-ng memberrigidly connected to the projecting ends of the pinion-shaft outside ofsaid sleeve, a pitman rigidly connected with the sleeve at one end andits opposite end having a pivotal and longitudinal connection,substantially as described.

5. A gearing comprsinga drive-shaft, a U shaped frame having a removableouter Wall, the end of said removable outer Wall having aninwardly-projecting sleeve passing IOO IZO

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through the inner wall of the frame, a sprocket loose upon the innerprojecting end of said sleeve and itself provided with anoutwardlyprojecting sleeve passed through the inner wall of said frame,a gear fast upon the sprocket-sleeve at a point between the inner andouter walls of the frame, a pinion journaled upon and'carried by thesaid frame, the pinion having a rigid shaft projecting through the outerremovable wall of said U- shaped frame, a pitnian having one end looseupon the projecting end of the pinion-shaft, and having aninwardly-projecting member interlocking with said pinion, the oppositeend of the pitman having a pivotal and llongitudinal supportingconnection, and an operating member rigidly secured to the proj ectingend of the pinion-shaft at a point outside of said pitn1an,substantiallyas described.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID C. FRAZEUR.

Witnesses:

A. S. PATrIsoN, GEO. E. FRECH.

